[Technical Field]
[0001] The present invention relates to a roof integrated sunlight generation module, and
more particularly to a roof integrated sunlight generation module having a device
capable of improving and optimizing sunlight generation efficiency through electric
power optimization between solar battery modules and compensation of electricity generation
loss caused by shadow.
[Background Art]
[0002] In general, a sunlight generation system has merits such as cleanliness and inexhaustibility
so that many countries have performed research for the sunlight generation system
for a global environmental problem and a measure for energy diversification as a part
of development of alternative energies.
[0003] In general, according to the sunlight generation system capable of producing energy
by using sunlight, a plurality of sunlight generation modules are connected in serial-parallel
connection to be connected to a power conversion device. That is, only one sunlight
generation module has so low output voltage. Therefore, a plurality of sunlight generation
module is connected in series to boost an output voltage, and a plurality of serial
connection arrays are connected in parallel to get final power.
[0004] However, the sunlight generation module generates heats when producing electric power
by using solar energy, and the heats deteriorates electric power generation capability.
Therefore, effective heat dissipation is necessary in order to improve efficiency
of the sunlight generation system.
[0005] Additionally, extra support structures are required in order to install the sunlight
generation module at a roof of a house, etc., and the extra support structures are
required even to a new-built house. Therefore, a structure of the house and aesthetic
features of city are damaged.
[0006] Additionally, when the sunlight generation module is installed at a region with limited
area such as a region with concentrated buildings and houses, there may be output
power deviation between the sunlight generation modules due to a shadow of a building,
a housing, a tree, etc., a shadow induced by sun angle, and various contaminant such
as fallen leaves. When the sunlight generation modules with deviation are connected
in series, final output power is lowered.
[Detailed Description of the Invention]
[Objects of the Invention]
[0007] Therefore, the present invention considers the above problems, and provides a roof
integrated sunlight generation module with a generation efficiency improving and optimizing
device capable of maximizing generation efficiency of a sunlight generation system
through a solution of differences among sunlight generation modules and stabilizing
power by improving heat dissipation and construct ability of the sunlight generation
module and separately controlling the sunlight generation module for optimizing generation
efficiency of the sunlight generation module.
[Technical Solution]
[0008] A sunlight generation module according to an embodiment includes a solar battery
module generating electric power by using sunlight, an external frame having a receiving
part receiving the solar battery module, a support frame disposed in the receiving
part to support the solar battery module, the support frame having a penetration part
formed at a center region, and a generating efficiency optimization device installed
in the penetration part and connected to an output terminal of the solar battery module
to optimize efficiency of sunlight generation.
[0009] The sunlight generation module may further includes a installation rail formed to
cross the penetration part for installing the generating efficiency optimization device.
[0010] The generating efficiency optimization device may include a case combined with the
installation rail to be fastened, an input terminal section formed at a side face
of the case, such that an output wire of the solar battery module is connected thereto,
a circuit section installed inside of the case to optimize generation efficiency regarding
to an input through the input terminal section, and an output section formed at a
side face of the case to transmit an output of the circuit section.
[0011] The generating efficiency optimization device may further include an indication lamp
indicating an normal operation state or abnormal operation state of the generating
efficiency optimization device.
[0012] The generating efficiency optimization device may include a DC/DC converter section
converting a level of direct current power outputted by the solar battery module,
an optimization device control section controlling the DC/DC converter section to
trace maximum power point of the solar battery module, and controlling an operation
mode of the generating efficiency optimization device, and an operation mode converting
section electrically connected with the DC/DC converter section in parallel in order
to convert the operation mode of the generating efficiency optimization device according
to a control of the optimization device control section.
[0013] The optimization device control section may operate the generating efficiency optimization
device in a solar battery mode such that electric power outputted from the solar battery
module is directly outputted without passing through the DC/DC converter section,
when the solar battery module is judged to maintain an optimum operation state that
is previously set. For example, the optimization device control section may maintain
the operation mode converting section in an on-state, and may shut down the DC/DC
converter section for the solar battery mode.
[0014] The optimization device control section may control the DC/DC converter section such
that the optimization device control section maintains the operation mode converting
section in an off-state to trace maximum power point, when the solar battery module
is judged to be out of an optimum operation state that is previously set. For example,
the optimization device control section may operate the DC/DC converter section in
a buck mode when a maximum power point voltage of the solar battery module is lower
than an output voltage. For another example, the optimization device control section
may operate the DC/DC converter section in a boost mode when a maximum power point
voltage of the solar battery module is higher than an output voltage.
[0015] The optimization device control section may further include a bypass diode for bypassing
a string current, when the solar battery module is defective.
[0016] The external frame may include an upper plate and a lower plate. The lower plate
may include a first lower plate protruding portion protruding out of the upper plate
in a width direction and a second lower plate protruding portion protruding out of
the upper plate in a length direction that is perpendicular to the width direction,
and the upper plate may include a first upper plate protruding portion protruding
out of the lower plate in the width direction to be opposite to the first lower plate
protruding portion, and a second upper plate protruding portion protruding out of
the lower plate in the length direction to be opposite to the second lower plate protruding
portion.
[0017] A wiring groove for drawing a wiring out may be formed on an upper surface of the
first lower plate protruding portion and a lower surface of the first upper plate
protruding portion.
[0018] A combination hole may be formed on an upper surface of the first lower plate protruding
portion and the second lower plate protruding portion, and a combination protrusion
corresponding the combination hole may be formed on a lower surface of the first upper
plate protruding portion and the second upper plate protruding portion.
[0019] The lower plate may include a first ventilation hole penetrating in the length direction
of the external frame, and the support frame may include a second ventilation hole
penetrating in the length direction of the external frame to be connected to the first
ventilation hole.
[0020] The sunlight generation module may further include a heat dissipation plate disposed
between the solar battery module and the support frame. For example, the heat dissipation
plate may have a mesh shape.
[0021] A sunlight generation module according to another embodiment includes a frame with
a roof tile shape, the frame having a penetration part at a center region, a solar
battery module disposed on an upper surface of the frame to cover the penetration
part, a generating efficiency optimization device installed in the penetration part
and connected to an output terminal of the solar battery module to optimize sunlight
generation, and an installation rail formed to cross the penetration part for installing
the generating efficiency optimization device.
[0022] The sunlight generation module may further include a heat dissipation plate disposed
on a back surface of the solar battery module.
[0023] The generating efficiency optimization device may include a DC/DC converter section
converting a level of direct current power outputted by the solar battery module,
an optimization device control section controlling the DC/DC converter section to
trace maximum power point of the solar battery module, and controlling an operation
mode of the generating efficiency optimization device, and an operation mode converting
section electrically connected with the DC/DC converter section in parallel in order
to convert the operation mode of the generating efficiency optimization device according
to a control of the optimization device control section.
[Advantageous Effects]
[0024] According to the sunlight generation module described above, in order to prevent
power loss induced by a shadow of a neighboring buildings, houses, trees and fallen
leaves and mismatch between solar battery modules, the generation efficiency optimization
device capable of controlling each solar battery is installed at each solar battery,
so that the operation mode of the solar battery can be maintained in optimum state
to maximize total generation efficiency of the sunlight generation system.
[0025] Further, the generating efficiency optimization device is installed inside of the
frame, so that the sunlight generation module can be compactified without increasing
thickness, and installation and construction can be easy.
[0026] Furthermore, the sunlight generation module according to the present invention can
be integrally formed with a roof to make installation easy, and the heats generated
by the solar battery module can be dissipated easily to improve efficiency of the
solar battery module.
[Brief Description of the Drawings]
[0027]
FIG. 1 is a block diagram showing a sunlight generation system according to an embodiment
of the present invention.
FIG. 2 is an exploded perspective view showing a sunlight generation module according
to an embodiment of the present invention.
FIG. 3 is a combined perspective view showing the sunlight generation module in FIG.
2.
FIG. 4 is a plan view showing the sunlight generation module in FIG. 2.
FIG. 5 is a rear view showing the sunlight generation module in FIG. 2.
FIG. 6 is a front view showing the sunlight generation module in FIG. 2.
FIG. 7 is a back view showing the sunlight generation module in FIG. 2.
FIG. 8 and FIG. 9 are respectively a perspective view and a cross-sectional view showing
a heat dissipation plate according to another embodiment.
FIG. 10 is a plan view showing an installing state of a generating efficiency optimization
device.
FIG. 11 is a perspective view showing the generating efficiency optimization device.
FIG. 12 is a perspective view showing sunlight generation modules according to an
embodiment of the present invention, which are combined with each other.
FIG. 13 is a pictorial drawing showing a combination of 'A' region in FIG. 12 in a
view from a backside.
FIG. 14 is a pictorial drawing showing a combination of 'B' region in FIG. 12.
FIG. 15 is a block diagram showing a circuit section of the generating efficiency
optimization device in FIG. 10.
FIG. 16 is a circuit diagram showing the DC/DC converter section and the operation
mode converting section in FIG. 15.
FIG. 17 is a plan view showing a sunlight generation module according to another embodiment
of the present invention.
FIG. 18 is a cross-sectional view showing the sunlight generation module in FIG. 17.
FIG. 19 is a rear view showing the sunlight generation module in FIG. 17.
[Embodiments of the Invention]
[0028] The characteristics and advantageous effects will be clarified through the following
figures and description. Therefore, a person skilled in the art will easily embody
the idea of the present invention. The invention may have various modifications and
embodiments, and the invention is described more fully hereinafter with reference
to the accompanying drawings. However, The present invention should not be construed
as limited to the example embodiments set forth herein, but should be understood to
includes all modifications, equivalents and substitutions within the scope of the
idea and technics of the present invention. The terms used in the present application
are only to explain the specific embodiment and is not intended to limit the present
invention. The terms "a", "an" and "the" mean "one or more" unless expressly specified
otherwise. The terms "including", "comprising", etc., are to designate features, numbers,
processes, structural elements, parts, and combined component of the application,
and should be understood that it does not exclude one or more different features,
numbers, processes, structural elements, parts, combined component. Terms such as
"first", "second, etc. may be used to indicate various elements, however, the elements
should not be limited by the terms. The terms are only used to distinguish one structural
element from another structural element. For example, a first structural element may
be named as second structural element if the right is not beyond the scope, the same
applies to the second structural element that may be named as the first structural
element.
[0029] Hereinafter, embodiments of the present invention will be explained referring to
drawings.
[0030] FIG. 1 is a block diagram showing a sunlight generation system according to an embodiment
of the present invention.
[0031] Referring to FIG. 1, the sunlight generation system according to an embodiment of
the present invention includes a plurality of sunlight generation modules 1000 and
an inverter 2000 for converting a direct current power outputted from the plurality
of sunlight generation modules 1000 into an alternating current power.
[0032] The sunlight generation modules 1000 may be connected with each other in serial-parallel
connection in order to boost an output voltage to a voltage required by the inverter
2000. For example, the sunlight generation modules 1000 may be formed in a tile shape
on a roof of a house so that the sunlight generation modules 1000 may be a roof integrated
structure performing a roof operation of a house and self-generation electricity.
[0033] Each of the sunlight generation modules 1000 includes a solar battery module 100
generating electric power by using sunlight and a generating efficiency optimization
device 200 respectively connected to the solar battery module 100 for optimizing generation
efficiency of the sunlight generation module 1000. For example, the generating efficiency
optimization device 200 is connected to all of the solar battery modules 100 one by
one. Alternatively, the generating efficiency optimization device 200 may be connected
to the solar battery modules 100 one by three through five.
[0034] When the sunlight generation modules 1000 are installed at a region with concentrated
buildings and houses or a region with limited area, there may be output power deviation
between the sunlight generation modules 1000 due to a shadow of a building, a housing,
a tree, etc., a shadow induced by sun angle, and various contaminant such as fallen
leaves. When the sunlight generation modules 1000 with deviation are connected in
series, final output power is lowered. Therefore, according to the present invention,
the generating efficiency optimization device 200 for controlling the operation of
the sunlight generation modules 1000 is connected to each of the solar battery modules
100 so that efficiency of the final output power outputted from the sunlight generation
system may be improved and optimized.
[0035] FIG. 2 is an exploded perspective view showing a sunlight generation module according
to an embodiment of the present invention, FIG. 3 is a combined perspective view showing
the sunlight generation module in FIG. 2, FIG. 4 is a plan view showing the sunlight
generation module in FIG. 2, FIG. 5 is a rear view showing the sunlight generation
module in FIG. 2, FIG. 6 is a front view showing the sunlight generation module in
FIG. 2, and FIG. 7 is a back view showing the sunlight generation module in FIG. 2.
[0036] Referring to FIG. 2 through FIG. 7, the sunlight generation module 1000 includes
a solar battery module 100, an external frame 300 having a receiving part 301 receiving
the solar battery module 100, a support frame 400 being disposed in the receiving
part 301 to support the solar battery module 100 and having a penetration part 410
formed at a center thereof, and a generating efficiency optimization device 200 installed
at the penetration part 410.
[0037] The solar battery module 100 generates electric power by using sunlight. The solar
battery module 100 is a battery receiving sunlight energy to convert electric energy,
and has a structure in which solar battery cells are connected in series, parallel
or series-parallel.
[0038] The external frame 300 includes an upper plate 310 and a lower plate 320. The external
frame 300 has a structure in which the upper plate 310 and the lower plate 320 are
stacked. The lower plate 320 is formed to be protruded in a width direction and length
direction with respect to the upper plate 310, so that a plurality of external frames
300 can be connected with each other without an additional combining device.
[0039] In detail, the lower plate 320 includes a first lower plate protruding portion 321
protruding out of the upper plate 310 in a width direction (left and right direction
in FIG. 4), for example, in a right direction, and a second lower plate protruding
portion 322 protruding out of the upper plate 310 in a length direction that is perpendicular
to the width direction (up and down direction in FIG. 4), for example, in a down direction.
[0040] Further, the upper plate 310 includes a first upper plate protruding portion 311
protruding out of the lower plate 320 in the width direction, for example, in a left
direction opposite to the first lower plate protruding portion 321 in FIG. 4, and
a second upper plate protruding portion 312 protruding out of the lower plate 320
in the length direction, for example, in a up direction opposite to the second lower
plate protruding portion 322.
[0041] For example, the upper plate 310 and the lower plate 320 is formed by rectangular
plate with same width and same length, and the upper plate 310 and the lower plate
320 are shift with respect to each other in the width direction and the length direction
to be combined with each other so that the first lower plate protruding portion 321,
the second lower plate protruding portion 322, the first upper plate protruding portion
311 and the second upper plate protruding portion 312 are formed.
[0042] Hereinafter, the combination of the external frames 300 is explained. In detail,
the external frames 300 can be combined with each other in the up and down direction
and in the left and right direction by the structure of protrusions of the upper plate
310 and the lower plate 320 but by no additional element.
[0043] The combination of the external frames 300 in the present invention may be performed
by fitting through a combination hole and a combination protrusion. For example, a
first combination hole 323 and a second combination hole 324 are formed on an upper
surface of the first lower plate protruding portion 321 and an upper surface the second
lower plate protruding portion 322, respectively, and a first combination protrusion
313 corresponding to the first combination hole 323 and a second combination protrusion
314 corresponding to the second combination hole 324 are formed on a lower surface
of the first upper plate protruding portion 311 and on a lower surface of the second
upper plate protruding portion 312, respectively.
[0044] For example, the first combination holes 323 are formed on the upper surface the
first lower plate protruding portion 321 along two lines, and three of the first combination
holes 323 are formed per line with same interval. For example, the second combination
holes 324 are formed on the upper surface of the second lower plate protruding portion
322 along one line, and three of the second combination holes 324 are formed per line
with same interval.
[0045] For example, the first combination protrusions 313 are formed along two lines correspondingly
the first combination holes 323. For example, the second combination protrusions 314
are formed along one line correspondingly the second combination holes 324.
[0046] On the other hand, a first wiring groove 325 and a second wiring groove 315 for drawing
a wiring 330 out may be formed on the upper surface of the first lower plate protruding
portion 321 and the lower surface of the first upper plate protruding portion 311,
respectively. The first wiring groove 325 and the second wiring groove 315 extends
to both ends along the length direction of the external frame 300.
[0047] A plurality of first ventilation holes 326 penetrating the lower plate 320 along
the length direction of the external frame 300 may be formed at a side of the lower
plate 320. Additionally, the support frame 400 may include a second ventilation hole
420 penetrating along the length direction of the external frame 300 to be connected
to the first ventilation hole 326. The second ventilation hole 420 and the first ventilation
hole 326 connected with each other form an air path to dissipate heat generated by
the solar battery module 100. Further, the heat generated by the solar battery module
100 may be reused by connecting the air path to outside.
[0048] On the other hand, the sunlight generation module 1000 may further include a heat
dissipation plate 500 disposed between the solar battery module 100 and the support
frame 400. The heat dissipation plate 500 dissipate heat of the solar battery module
100 out quickly to improve efficiency of the solar battery module 100.
[0049] The heat dissipation plate 500 may be formed in a mesh type by aluminum alloy having
high conductivity as shown in FIG. 2.
[0050] FIG. 8 and FIG. 9 are respectively a perspective view and a cross-sectional view
showing a heat dissipation plate according to another embodiment.
[0051] Referring to FIG. 8 and FIG. 9, the heat dissipation plate 510 may include an low
melting point metal inner plate part 512 and an aluminum outer plate part 514 covering
the low melting point metal inner plate part 512. A plurality of heat dissipation
fins may be formed under the heat dissipation plate 510.
[0052] As described above, when the heat dissipation plate 510 has a dual structure of the
aluminum outer plate part 514 and the low melting point metal inner plate part 512
formed by Hg, Na, Pb, Bi or Sn, of which melting point is lower than aluminum, the
aluminum outer plate part 514 easily dissipates heats out and the low melting point
metal inner plate part 512 absorbs heats during phase change from solid to liquid
to prevent temperature rising. That is, when the temperature of the solar battery
module 100 rises above the melting point of the low meting point metal, the low melting
point metal inner plate part 512 absorbs heats while phase changing and the aluminum
outer plate part 514 dissipates absorbed heat out. Therefore, the temperature of the
solar battery module 100 is prevented from being rising above a specific temperature
while improving the heat dissipation efficiency.
[0053] Referring again to FIG. 2 and FIG. 5, the generation efficiency optimization device
200 is installed at the penetration part 410 of the support frame 400, and is connected
to an output terminal of the solar battery module 100 to improve and optimize sunlight
generation efficiency.
[0054] The sunlight generation module 1000 may further include an installation rail 500
crossing the penetration part 410 for installing the generation efficiency optimization
device 200. The installation rail 500 is formed between the solar battery module 100
and the support frame 400, especially, between the heat dissipation plate 500 and
the support frame 400 to be exposed through the penetration part 410 for installing
the generation efficiency optimization device 200. The installation rail 600 may be
combined to the external frame 300 to be disposed inside of the receiving part 301
of the external frame 300. Alternatively, the installation rain 600 may be combined
with the support frame 400 or integrally formed with the support frame 400.
[0055] Preferably, the installation rail 600 is formed to be space-saving in order to improve
heat dissipation efficiency. In order for that, the installation rail 600 is formed
in a parallel rail shape with a thin width.
[0056] FIG. 10 is a plan view showing an installing state of a generating efficiency optimization
device, and FIG. 11 is a perspective view showing the generating efficiency optimization
device.
[0057] Referring to FIG. 10 and FIG. 11, the generation efficiency optimization device 200
includes a case 210 combined with the installation rail 600 to be fastened, an input
terminal section 220 formed at a side face of the case 210, to which an out cable
of the solar battery module 100 is connected, a circuit section 230 being installed
in the case 210 and performing generation efficiency optimization with regard to an
input of the input terminal section 220, and an output terminal section 240 formed
at a side face of the case 210 in order to transmit an output of the circuit section
230.
[0058] The input terminal section 220 and the output terminal section 240 have a jack connection
structure, so that it is convenient to be connected to the wiring 330.
[0059] The generation efficiency optimization device 200 may include a normal state indication
lamp 252 and an abnormal state indication lamp 254 for indicating normal or abnormal
operation state of the generation efficiency optimization device 200. Through the
normal state indication lamp 252 and the abnormal state indication lamp 254, an operation
of corresponding sunlight generation module 1000 can be grasped and a maintenance
of the sunlight generation module 1000 can be performed.
[0060] As described above, through installing the generation efficiency optimization device
200 for optimizing generation efficiency of the sunlight generation module 1000 at
the penetration part 410 of the support frame 400, the sunlight generation module
1000 can be compactified and the efficiency of installation and construction can be
improved.
[0061] FIG. 12 is a perspective view showing sunlight generation modules according to an
embodiment of the present invention, which are combined with each other.
[0062] Referring to FIG. 12, a plurality of sunlight generation modules 1000a, 1000b and
1000c, which are identical, is combined with each other in the width direction and
the length direction, so that a sunlight generation module array capable of covering
various areas can be formed.
[0063] Since each of the sunlight generation modules 1000a, 1000b and 1000c is combined
with neighboring sunlight generation module 1000a, 1000b and 1000c, the combination
thereof is stable. The air path formed through the first ventilation holes 326 and
the second ventilation holes 420 are connected, respectively, without severance when
the sunlight generation modules 1000a, 1000b and 1000c are connected, so that heat
dissipation and heat reuse may be effectively achieved.
[0064] FIG. 13 is a pictorial drawing showing a combination of 'A' region in FIG. 12 in
a view from a backside. In detail, FIG. 13 shows combination between the first lower
plate protruding portion 321 of the second sunlight generation module 1000b and the
first upper plate protruding portion 311 of the first sunlight generation module 1000a.
[0065] In detail, the plurality of first combination holes 323 is formed in two lines on
the upper surface of the first lower plate protruding portion 321 of the second sunlight
generation module 1000b, and the plurality of first combination protrusions 313 is
formed at corresponding position on the lower surface of the first upper plate protruding
portion 311 of the first sunlight generation module 1000a.
[0066] In this arrangement, after disposing the second sunlight generation module 1000b
down and the first sunlight generation module 1000a up to align the first combination
hole 323 and the first combination protrusion 313, the first sunlight generation module
1000a is moved downward to insert the second sunlight generation module 1000b, so
that the first sunlight generation module 1000a and the second sunlight generation
module 1000b are combined.
[0067] FIG. 14 is a pictorial drawing showing a combination of 'B' region in FIG. 12. In
detail, FIG. 14 shows combination between the second lower plate protruding portion
322 of the first sunlight generation module 1000a and the second upper plate protruding
portion 312 of the third sunlight generation module 1000c.
[0068] In detail, the second combination holes 324 is formed on the upper surface of the
second lower plate protruding portion 322 of the first sunlight generation module
1000a, and the plurality of second combination protrusions 314 is formed at corresponding
position on the lower surface of the second upper plate protruding portion 312 of
the third sunlight generation module 1000c.
[0069] In this arrangement, after disposing the first sunlight generation module 1000a down
and the third sunlight generation module 1000c up to align the second combination
hole 324 and the second combination protrusion 314, the third sunlight generation
module 1000c is moved downward to insert the first sunlight generation module 1000a,
so that the first sunlight generation module 1000a and the third sunlight generation
module 1000c are combined.
[0070] As described above, the sunlight generation module 1000 with a shingle shape may
be integrally formed with a roof without an additional structure, so that installation
thereof is easy, an installation angle can be easily changed even when the plurality
of sunlight generation modules 1000 is combined, and a shadow effect can be minimized
through each of the sunlight generation modules 1000.
[0071] Further, according to the sunlight generation module 1000 with a shingle shape, the
heat generated by the solar battery module 100 can be easily dissipated out to improve
the efficiency of the solar battery module 100, and the heat generated by the sunlight
generation module 1000 may be collected to provide a building with the heat. That
is, by using the collected heats as a heat source for heating, while preventing efficiency
of the sunlight module 1000 from being lowered, the amount of energy generation per
unit area increases to improve efficiency of using solar energy, comparing conventional
system using a sunlight generation module and a solar heat collector.
[0072] Further, according to the sunlight generation module 1000 with a shingle shape, the
plurality of sunlight generation modules 1000 can be easily combined with each other,
the shape of combination can be adjusted as desired, and the wiring can be easy even
when the plurality of sunlight generation modules 1000 is combined with each other.
[0073] Hereinafter, the operation of the generating efficiency optimization device 200 installed
at each of the sunlight generation module 1000 will be explained in detail.
[0074] FIG. 15 is a block diagram showing a circuit section of the generating efficiency
optimization device in FIG. 10, and FIG. 16 is a circuit diagram showing the DC/DC
converter section and the operation mode converting section in FIG. 15.
[0075] Referring to FIG. 15 and 16, the circuit section 230 of the generating efficiency
optimization device 200 includes a DC/DC converter section 232, a optimization device
control section 234 and an operation mode converting section 236.
[0076] The DC/DC converter section 232 is formed to convert electric power for the solar
battery module 100. That is, the DC/DC converter section 232 converts electric power
outputted by the solar battery module 100 to a voltage or an electric current proper
to driving a load (for example, the inverter 2000) according to a control of the optimization
device control section 234. For example, the DC/DC converter section 232 may raise
voltage outputted by the solar battery module 100, perform a buck operation lowering
voltage, or perform boost operation.
[0077] The optimization device control section 234 controls the DC/DC converter section
232 to trace a maximum power point (MPP) of the solar battery module 100. In order
for that, optimization device control section 234 has a characteristic of detecting
voltage and current outputted by the solar battery module 100.
[0078] The optimization device control section 234 may include a central processing unit
(CPU), a memory unit, an input/output unit, an interface for being connected to the
DC/DC converter section 232, and at least one sensor sensing voltage and current at
the input terminal and the output terminal of the DC/DC converter section 232.
[0079] The optimization device control section 234 compares and analyses an input voltage
and an input current, and an output voltage and an output current of the DC/DC converter
section 232 to output the maximum power point (MPP) of the solar battery module 100
and to change duty cycle of the DC/DC converter section 232. Therefore, the optimization
device control section 234 changes the duty cycle of the DC/DC converter section 232
to control operation in order to extract maximum electric power from the solar battery
module 100.
[0080] Further, the optimization device control section 234 controls the operation mode
of the generating efficiency optimization device 200 in order that the DC/DC converter
section 232 traces the maximum power point (MPP) of the solar battery module 100 based
on real time evaluation regarding to operation state of the solar battery module 100.
[0081] In order for that, the circuit section 230 of the generating efficiency optimization
device 200 further includes an operation mode converting section 234 for changing
the operation mode of the generating efficiency optimization device 200 according
to the control of the optimization device control section 234. The operation mode
converting section 234 is electrically connected with the DC/DC converter section
232 in parallel. For example, as shown in FIG. 13, the operation mode converting section
234 may include an electronic switch with two MOSFETs Q5A and Q5B of common gate and
common source structure.
[0082] When the solar battery module 100 is judged to maintain optimum operation state which
is previously set as a result of operation evaluation of the solar battery module
100, the optimization device control section 234 operates the generating efficiency
optimization device 200 in a solar battery mode. That is, when a maximum power point
voltage (Vmpp) of the solar battery module 100 is substantially equal to the out voltage
Vout of the DC/DC converter section 232, the optimization device control section 234
operates the generating efficiency optimization device 200 in a solar battery mode.
For example, the optimization device control section 234 operates the generating efficiency
optimization device 200 in a solar battery mode, when the maximum power point voltage
(Vmpp) of the solar battery module 100 is judged to be in ±2% range of the output
voltage Vout as a result of operation evaluation of the solar battery module 100.
On the other hand, the voltage range for determining optimum operation state may be
adjusted according to setting of a user.
[0083] The optimization device control section 234 maintains the operation mode converting
section 234 in a turn on state, and shutdowns the DC/DC converter section 232 for
operation of the solar battery mode. Therefore, in the solar battery mode, the power
outputted by the solar battery module 100 is directly outputted through the operation
mode converting section 234 without passing through the DC/DC converter section 232.
As a result, an additional processing of electric power treating such as a control
of operation of the DC/DC converter section 232 is omitted in the solar battery mode,
so that optimum electric power without power loss may be obtained.
[0084] Additionally, when an overcurrent flows through the DC/DC converter section 232,
the DC/DC converter section 232 is overheated or the DC/DC converter section 232 is
damaged, the optimization device control section 234 changes the generating efficiency
optimization device 200 to be in the solar battery mode to protect the generating
efficiency optimization device 200.
[0085] On the other hand, when the solar battery module 100 is judged to be out of the optimum
operation state which is previous set as a result of operation evaluation of the solar
battery module 100, the optimization device control section 234 turns off the operation
mode converting section 234, and controls the DC/DC converter section 232 for tracing
a maximum power point (MPP). That is, when the maximum power point voltage (Vmpp)
of the solar battery module 100 is higher or lower than the out voltage Vout of the
DC/DC converter section 232, the optimization device control section 234 controls
the DC/DC converter section 232 to output optimum power generation.
[0086] In the present embodiment, the DC/DC converter section 232 is formed by a buck-boost
converter capable of operating in a buck mode and in a boost mode.
[0087] For example, the DC/DC converter 232 includes four FETs Q1, Q2, Q3 and Q4 with a
H-bridge structure.
[0088] The optimization device control section 234 determines the optimum mode, in which
the DC/DC converter section 232 operates, to trace the maximum power point (MPP) of
the solar battery module 100, based on the real time evaluation regarding to the operation
state of the solar battery module 100.
[0089] For an example, when the when the maximum power point voltage (Vmpp) of the solar
battery module 100 is lower than the output voltage Vout of the DC/DC converter section
232 as a result of operation evaluation of the solar battery module 100, the optimization
device control section 234 operates the DC/DC converter section 232 in the buck mode.
For example, the optimization device control section 232 operates the DC/DC converter
section 232 in the buck mode, when the maximum power point voltage (Vmpp) of the solar
battery module 100 is lower than about 98% of the output voltage Vout of the DC/DC
converter section 232. In the buck mode, the first FET Q1 and the second FET Q2 are
switched, the third FET Q3 is in an off-state, and the fourth FET Q4 is in an on-state.
[0090] For another example, when the when the maximum power point voltage (Vmpp) of the
solar battery module 100 is higher than the output voltage Vout of the DC/DC converter
section 232 as a result of operation evaluation of the solar battery module 100, the
optimization device control section 234 operates the DC/DC converter section 232 in
the boost mode. For example, the optimization device control section 234 operates
the DC/DC converter section 232 in the boost mode, when the maximum power point voltage
(Vmpp) of the solar battery module 100 is higher than about 102% of the output voltage
Vout of the DC/DC converter section 232. In the boost mode, the third FET Q3 and the
fourth FET Q4 are switched, the second FET Q2 is in an off-state, and the first FET
Q1 is in an on-state.
[0091] As described above, when the solar battery module 100 is determined to be out of
the optimum operation state, the DC/DC converter section 232 is controlled to trance
the maximum power point (MPP) of the solar battery module 100 to maintain the solar
battery module 100 in the optimum operation state so that generation efficiency can
be optimized.
[0092] On the other hand, the generation efficiency optimization device 200 may further
include a bypass diode D1 for bypassing string current. The bypass diode D1 bypasses
the string current to prevent string current loss, so that the string current does
not pass through the DC/DC converter section 232 and the solar battery module 100,
when a power loss is induced due to a shadow of the solar battery module 100, or the
solar battery module 100 or the DC/DC converter section 232 is damaged. In order for
that, the bypass diode D1 is in a reverse bias state in a normal operation state,
and in a forward bias state in order to bypass the string current in an abnormal operation
state.
[0093] As described above, the generating efficiency optimization device 200 capable of
separately controlling each of the solar battery module 100 is installed at each solar
battery module 100, so that the operation mode of the solar battery module 100 is
maintained in best to improve and to optimize total efficiency of the sunlight generation
system.
[0094] FIG. 17 is a plan view showing a sunlight generation module according to another
embodiment of the present invention, FIG. 18 is a cross-sectional view showing the
sunlight generation module in FIG. 17, and FIG. 19 is a rear view showing the sunlight
generation module in FIG. 17.
[0095] Referring to FIG. 17, FIG. 18 and FIG. 19, a sunlight generation module 700 according
to another embodiment of the present invention includes a frame 710 having a roof
tile shape and a penetration part 701 formed at a center region thereof, a solar battery
module 720 disposed on the frame 710 such that the solar battery module 720 covers
the penetration part 701, and a generating efficiency optimization device 730 installed
in the penetration part 701 and connected to an output terminal of the solar battery
module 720 to optimize sunlight generation efficiency.
[0096] The frame 710 has a same shape as a roof tile to replace a roof tile of a house.
For example, the frame 710 has a flat portion 712 that is flat in order that the solar
battery module 720 is mounted, a first curved portion 714 curvedly extending from
a side of the flat portion 714 in a first direction, and a second curved portion 716
curvedly extending from an opposite side of the flat portion 714 in a second direction
opposite to the first direction. The first curved portion 714 and the second curved
portion 716 are curvedly formed in opposite directions, so that neighboring sunlight
generation modules 700 can be connected.
[0097] The sunlight generation module 700 may further include a heat dissipation plate 750
disposed on a back surface of the solar battery module 720. The heat dissipation plate
750 dissipates heats generated by the solar battery module 720 when generating power
in order to improve generation efficiency of the solar battery module 720. The heat
dissipation plate 750 may be formed in a mesh type by aluminum alloy having high conductivity
as shown in FIG. 2. Alternatively, the heat dissipation plate 750 may be formed such
that the heat dissipation plate 750 includes an low melting point metal inner plate
part and an aluminum outer plate part covering the low melting point metal inner plate
part as shown in FIG. 8 and FIG. 9.
[0098] Additionally, the sunlight generation module 700 may further include an installation
rail 740 crossing the penetration part 701 for installing the generating efficiency
optimization device 730. The installation rail 740 is formed under the solar battery
module 720 and the heat dissipation plate 750, and exposed out through the penetration
part 701 for installing the generating efficiency optimization device 730. For example,
the installation rail 740 may be combined with the frame 710 such that the installation
rail 740 is disposed inside of the penetration part 701. The installation rail 740
is formed to be space-saving in order to improve heat dissipation efficiency of the
heat dissipation plate 750. In order for that, the installation rail 740 is formed
in a parallel rail shape with a thin width.
[0099] The generating efficiency optimization device 730 is combined with the installation
rain 740 to be installed in the penetration part 701 of the frame 710. The generating
efficiency optimization device 730 may be installed per sunlight generation module
700, or per a group including a plurality of sunlight generation module 700.
[0100] As describe above, the generating efficiency optimization device 730 for optimizing
generation efficiency of the sunlight generation module 700 is installed inside of
the penetration part 701 of the frame 710, so that the sunlight generation module
700 can be compactified without increasing thickness. And, the sunlight generation
module 700 with a roof tile shape can be integrally installed at a roof without an
additional structure to make installation easy. Further, the sunlight generation module
700 with a roof tile shape dissipates heats generated by the solar battery module
100 to improve efficiency of the solar battery module 100.
[0101] The detailed description of the present invention is described with regard to the
preferable embodiment of the present invention, however, a person skilled in the art
may amend or modify the present invention within the spirit or scope in the following
claim of the present invention.
1. A sunlight generation module comprising:
a solar battery module generating electric power by using sunlight;
an external frame having a receiving part receiving the solar battery module;
a support frame disposed in the receiving part to support the solar battery module,
the support frame having a penetration part formed at a center region; and
a generating efficiency optimization device installed in the penetration part and
connected to an output terminal of the solar battery module to optimize efficiency
of sunlight generation.
2. The sunlight generation module of claim 1, further comprising a installation rail
formed to cross the penetration part for installing the generating efficiency optimization
device.
3. The sunlight generation module of claim 2, wherein the generating efficiency optimization
device comprises:
a case combined with the installation rail to be fastened;
an input terminal section formed at a side face of the case, such that an output wire
of the solar battery module is connected thereto;
a circuit section installed inside of the case to optimize generation efficiency regarding
to an input through the input terminal section; and
an output section formed at a side face of the case to transmit an output of the circuit
section.
4. The sunlight generation module of claim 3, wherein the generating efficiency optimization
device further comprises an indication lamp indicating an normal operation state or
abnormal operation state of the generating efficiency optimization device.
5. The sunlight generation module of claim 1, wherein the generating efficiency optimization
device comprises:
a DC/DC converter section converting a level of direct current power outputted by
the solar battery module;
an optimization device control section controlling the DC/DC converter section to
trace maximum power point of the solar battery module, and controlling an operation
mode of the generating efficiency optimization device; and
an operation mode converting section electrically connected with the DC/DC converter
section in parallel in order to convert the operation mode of the generating efficiency
optimization device according to a control of the optimization device control section.
6. The sunlight generation module of claim 5, wherein the optimization device control
section operates the generating efficiency optimization device in a solar battery
mode such that electric power outputted from the solar battery module is directly
outputted without passing through the DC/DC converter section, when the solar battery
module is judged to maintain an optimum operation state that is previously set.
7. The sunlight generation module of claim 6, wherein the optimization device control
section maintains the operation mode converting section in an on-state, and shuts
down the DC/DC converter section for the solar battery mode.
8. The sunlight generation module of claim 5, wherein the optimization device control
section controls the DC/DC converter section such that the optimization device control
section maintains the operation mode converting section in an off-state to trace maximum
power point, when the solar battery module is judged to be out of an optimum operation
state that is previously set.
9. The sunlight generation module of claim 8, wherein the optimization device control
section operates the DC/DC converter section in a buck mode when a maximum power point
voltage of the solar battery module is lower than an output voltage.
10. The sunlight generation module of claim 8, wherein the optimization device control
section operates the DC/DC converter section in a boost mode when a maximum power
point voltage of the solar battery module is higher than an output voltage.
11. The sunlight generation module of claim 5, wherein the optimization device control
section further comprises a bypass diode for bypassing a string current, when the
solar battery module is defective.
12. The sunlight generation module of claim 1, wherein the external frame comprises an
upper plate and a lower plate,
the lower plate includes a first lower plate protruding portion protruding out of
the upper plate in a width direction and a second lower plate protruding portion protruding
out of the upper plate in a length direction that is perpendicular to the width direction,
and
the upper plate includes a first upper plate protruding portion protruding out of
the lower plate in the width direction to be opposite to the first lower plate protruding
portion, and a second upper plate protruding portion protruding out of the lower plate
in the length direction to be opposite to the second lower plate protruding portion.
13. The sunlight generation module of claim 12, wherein a wiring groove for drawing a
wiring out is formed on an upper surface of the first lower plate protruding portion
and a lower surface of the first upper plate protruding portion.
14. The sunlight generation module of claim 12, wherein a combination hole is formed on
an upper surface of the first lower plate protruding portion and the second lower
plate protruding portion, and a combination protrusion corresponding the combination
hole is formed on a lower surface of the first upper plate protruding portion and
the second upper plate protruding portion.
15. The sunlight generation module of claim 12, wherein the lower plate comprises a first
ventilation hole penetrating in the length direction of the external frame, and
the support frame comprises a second ventilation hole penetrating in the length direction
of the external frame to be connected to the first ventilation hole.
16. The sunlight generation module of claim 1, further comprising a heat dissipation plate
disposed between the solar battery module and the support frame.
17. The sunlight generation module of claim 16, wherein the heat dissipation plate has
a mesh shape.
18. A sunlight generation module comprising:
a frame with a roof tile shape, the frame having a penetration part at a center region;
a solar battery module disposed on an upper surface of the frame to cover the penetration
part;
a generating efficiency optimization device installed in the penetration part and
connected to an output terminal of the solar battery module to optimize sunlight generation;
and
an installation rail formed to cross the penetration part for installing the generating
efficiency optimization device.
19. The sunlight generation module of claim 18, further comprising a heat dissipation
plate disposed on a back surface of the solar battery module.
20. The sunlight generation module of claim 18, wherein the generating efficiency optimization
device comprises:
a DC/DC converter section converting a level of direct current power outputted by
the solar battery module;
an optimization device control section controlling the DC/DC converter section to
trace maximum power point of the solar battery module, and controlling an operation
mode of the generating efficiency optimization device; and
an operation mode converting section electrically connected with the DC/DC converter
section in parallel in order to convert the operation mode of the generating efficiency
optimization device according to a control of the optimization device control section.